Gun control campaigners erect mock graveyard in Washington - video

Sorry, your browser is unable to play this video.
Please install Adobe Flash™ and try again.
Alternatively upgrade to a modern browser.

A makeshift cemetery with 3,300 grave markers is erected on the National Mall in Washington to remember victims of gun violence as lawmakers debate gun control. The 24-hour display is in the shadows of the US Capitol where Congress will vote on background checks on Tuesday